Add sign and post helper functions

client/rest/helpers.go

@@ -0,0 +1,29 @@
+package rest
+
+import (
+	keycmd "github.com/tendermint/go-crypto/cmd"
+	"github.com/tendermint/go-crypto/keys"
+	wire "github.com/tendermint/go-wire"
+
+	ctypes "github.com/tendermint/tendermint/rpc/core/types"
+
+	"github.com/tendermint/basecoin"
+	"github.com/tendermint/basecoin/client/commands"
+)
+
+// PostTx is same as a tx
+func PostTx(tx basecoin.Tx) (*ctypes.ResultBroadcastTxCommit, error) {
+	packet := wire.BinaryBytes(tx)
+	// post the bytes
+	node := commands.GetNode()
+	return node.BroadcastTxCommit(packet)
+}
+
+// SignTx will modify the tx in-place, adding a signature if possible
+func SignTx(name, pass string, tx basecoin.Tx) error {
+	if sign, ok := tx.Unwrap().(keys.Signable); ok {
+		manager := keycmd.GetKeyManager()
+		return manager.Sign(name, pass, sign)
+	}
+	return nil
+}